Fatigue test of a concrete reinforcing steel

Presentation for participants

Reference of the ILC	FA25RS
References of test methods	ISO 15630-1

Frequency	Each year
Main characteristics	N (Number of cycles before failure for a given σmax and a given Δσ)

Determination of the assigned values (“true values” for each characteristic)	By statistical computation of the totality of the results with possible selection on competence criteria (accreditation, validation by a reference body, quantity of tests performed in the year), test to detect possible collusion, merging of results not obtained in reproductibility conditions, suppression of technically unvalid results.
Type of statistical computation	For numerical results, the statistical computation will provide an assigned value with its attached uncertainty, values of standard deviations for repeatability and reproductibility, limits of alerts for bias and repeatability of the participant, indiviual values for uncertainty of results of participants.
Number of products submitted to tests	1
Number of samples per participation	5
Max number of operators per participation	1 (it is necessary to order as many participations as there are participating test operators)
Product submitted to tests	Hot rolled reinforcing steel
Type of samples	Bars
Approximate dimensions of samples	2x Ø16-25x780 mm
Specific preparation to be performed by the participant	None (other than possible necessity to polish the test specimens or to adapt their dimensions to the equipment of the participant)

Special notice for this ILC	Results have to be numerical in order to be statistically handable. The number of samples is set up at 9, in order to make the estimation of standard deviation of results statistically relevant. So, to avoid tests to last too long and avoid costs of tests too high: 1. loading values will be severe but, however, will remain reasonably close to usual conditions; 2. a special statistical procedure is used so that tests on samples showing the longest life may be stopped before rupture, saving an important amount of testing time.

Time schedule:
Opening date of registrations		20/12/2024
Registration deadline		15/03/2025
Date of shipment of samples		30/05/2025
Start of the tests		03/09/2025
Deadline for carrying out the tests and providing the results		27/10/2025
Date of delivery of reports		06/12/2025
Note: After the deadline, registrations are still possible. Contact us at ilc@compalab.org for more information.

Price (€)		425
Price if online payment (€)		340
Approximate weight (kg)		20